function FindFirst(const Text: WString; Options: TSearchOptions= []; StartIndex: Integer= 0; DirectionUp: Boolean= True): Integer;
-1 if the text is not found.Lance une recherche textuelle sur la page courante. Appelez cette méthode avant d’utiliser FindNext or FindPrevious to iterate through subsequent matches. Each call to FindFirst resets the internal search handle.
To highlight all occurrences visually without iterating, use HighlightSearchText instead.
var Pos: Integer;
begin
Pos := PdfView.FindFirst('invoice', [soMatchCase]);
while Pos >= 0 do
begin
Memo1.Lines.Add('Found at index: ' + IntToStr(Pos));
Pos := PdfView.FindNext;
end;
end;